Two-color phase-of-the-phase spectroscopy applied to nonperturbative electron-positron pair production in strong oscillating electric fields
Brass J, Milbradt RM, Villalba-Chavez S, Paulus GG, Mueller C (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 101
Article Number: 043401
Journal Issue: 4
DOI: 10.1103/PhysRevA.101.043401
Abstract
Production of electron-positron pairs from vacuum in strong bichromatic electric fields, oscillating in time with a fundamental frequency and its second harmonic, is studied. Strong-field processes occuring in such field configurations are generally known to be sensitive to the relative phase between the field modes. Phase-of-the-phase spectroscopy has recently been introduced in the context of strong-field photoionization as a systematic means to analyze these coherence effects. We apply this method to the field-induced pair production by calculating the phase dependence of the momentum-resolved particle yields. We show that asymmetric checkerboard patterns arise in the phase-of-the-phase spectra, similarly to those found in strong-field photoionization. The physical origin of these characteristic structures, which differ between the created electron and positron, is discussed.
Involved external institutions
Germany (DE)How to cite
APA:
Brass, J., Milbradt, R.M., Villalba-Chavez, S., Paulus, G.G., & Mueller, C. (2020). Two-color phase-of-the-phase spectroscopy applied to nonperturbative electron-positron pair production in strong oscillating electric fields. Physical Review A, 101(4). https://doi.org/10.1103/PhysRevA.101.043401
MLA:
Brass, J., et al. "Two-color phase-of-the-phase spectroscopy applied to nonperturbative electron-positron pair production in strong oscillating electric fields." Physical Review A 101.4 (2020).
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